Photometric calculations
Illuminance, uniformity and glare (UGR) calculations in DIALux, compliant with EN 12464-1 for each space type.
Fluoelektro Lighting Design Team · Serbia
Light that is engineered, not improvised.
DIALux photometric calculations, lighting design and emergency (anti-panic) lighting for interiors, facades and public spaces. From first idea to commissioning — one team, one standard.
Who we are
A family-owned studio with a design bureau in Niš
Fluoelektro was founded in 2005 with a vision to light up the world. We began as a trading company and in 2014 opened our lighting design bureau in Niš, Serbia, dedicated to lighting design and precise photometric engineering in DIALux.
Our team consists of DIALux-licensed lighting designers. Partners across Europe and beyond rely on our commitment to quality — from the first concept to the final on-site evaluation.
2005company founded
2014design bureau opened
DIALuxlicensed team
Teodora Radonjić
Team Lead — Lighting Design
DIALux evo 10 Certified · Expert for Lighting Design
Certificates & qualifications
Our lighting design team is certified through the official DIAL/DIALux training program. Click a certificate to verify:
- DIALux evo — Beginners
- DIALux evo — Advanced Learners
- DIALux evo — Outdoor lighting
- DIALux evo — Road lighting
- DIALux evo — Emergency lighting
- Basics of Lighting Technology I — Principles of Light
- Basics of Lighting Technology II — Lamps & Luminaires
- Basics of Lighting Technology III — Lighting Design
Certificates were issued under the maiden name Branković (now Radonjić). Issued by DIAL GmbH, Lüdenscheid (Germany), 2022.
For electrical engineers
Photometry is an integral part of every electrical installation project. Outsource it to us.
Working on an electrical design and the lighting calculation is slowing you down? Send us the floor plan — we return a complete DIALux report ready to drop into your project documentation.
- DIALux report with illuminance, uniformity and UGR verification per room, compliant with EN 12464-1
- Emergency lighting — escape route and anti-panic calculations to EN 1838
- Equipment specification with luminaire types, wattages and layout — ready for your bill of quantities
- Fast turnaround — we work in parallel with your design development, with revisions as needed
Emergency lighting
Anti-panic and escape route lighting to EN 1838
We design emergency lighting for escape routes, anti-panic areas and high-risk task zones — with DIALux compliance proof for building approval. An example from our work (IRIN building, Niš):
1.20 lxE min — middle area (≥ 0.50 lx)
1.23 lxE min — centerline (≥ 1.00 lx)
0.15diversity U d (≥ 0.025)
All escape-route parameters passed — verified by DIALux calculation (emergency light scene).
Mini calculator
How many luminaires do you need?
An instant estimate using the lumen method — for task lighting to EN 12464-1 and emergency lighting to EN 1838. Enter your room dimensions and see the result immediately.
—pcs
Luminaires required
Target level—
Suggested layout (rows × columns)—
Achieved average—
Total installed power—
Power density—
Annual consumption—
Annual energy cost—
EN 12464-1 (indicative)—
Level check—
Layout uniformity—
Energy savings (yr)—
Cost savings (yr)—
Simple payback—
—pcs
Emergency luminaires required
Requirement—
Maximum spacing—
Add an exit sign at every exit and every change of direction — signs are not included in this count.
Indicative estimate by the lumen (utilisation factor) method — maintenance factor and reflectances selectable. UGR, U₀ and Ra are normative EN 12464-1 requirements and can only be verified by a DIALux calculation with the real luminaire photometry. An official report requires DIALux.
Calculation reference: —
Enter your email so we can send and save the calculation (PDF). No obligation. By sending, you agree we may contact you about the calculation.
Our process
Six steps from brief to light
Every project follows the same proven methodology — which is why results are predictable, standards-compliant and true to the visualisation.
01
Project goal
We define what the lighting must achieve: functionality, atmosphere or accentuating architectural features.
02
Space analysis
Dimensions, finishes, daylight, patterns of use and technical constraints — power supply routes and mounting options.
03
Luminaire selection
LED solutions chosen for functional and aesthetic requirements: direct or indirect lighting, style and efficiency.
04
Technical planning
Calculation of luminaire quantities and layout in DIALux to reach target lux levels, including cable routing and switching.
05
Visualisation & simulation
Photorealistic simulations show how light behaves in the space under different conditions — before anything is installed.
06
Implementation & evaluation
Installation to plan, fine-tuning, and a final evaluation confirming every technical and aesthetic goal has been met.
Featured projects
From our DIALux portfolio
Facades, office floors, showrooms and emergency lighting — every project delivered with full photometric proof.
Facade lighting — Palata Venecija, Ulcinj, Montenegro (2025) — DIALux night simulations — uplight accents on facades, terrace, stairway and landscape lighting.
IRIN building, 3rd floor (former EI Niš) — offices, showrooms, meeting rooms — Complete DIALux project: work areas 500+ lx (U₀ ≥ 0.60), corridors 200+ lx, emergency lighting to EN 1838 — all checks passed.
Training campus — complete lighting concept (DIALux study) — From street and facade lighting through parking and an underground garage to training rooms, meeting rooms and breakout areas — work areas to EN 12464-1, roads and escape routes all handled in a single project.
Hotel in Soko Banja — guest-suite lighting (concept design) — Lighting concept for hotel suites: decorative dropped ceilings, recessed downlights, LED cove (indirect) lighting and accent lighting for a warm, comfortable atmosphere with energy-efficient LED solutions.
Trust
Brands and partners we work with
2005year founded
20+years of experience
1682projects delivered
DIALuxcertified team
Brands we represent
Clients & investors
Services
What we deliver for engineers, contractors and investors
DIALux lighting design
Complete lighting design in DIALux Evo — from CAD import to light scenes and the final calculation report.
Emergency lighting
Escape route and anti-panic lighting calculations to EN 1838 — the compliance proof you need for building approval.
Lighting design & concepts
Concepts for interiors, facades, sports and public buildings — from schematic design to a detailed equipment specification.
Visualisations & simulations
Photorealistic renders that show the investor exactly how the space will look — before any equipment is purchased.
Specification & support
Complete luminaire and accessory specification, with procurement guidance, installation support and final evaluation.
International projects
Transparent pricing, senior engineering
Independent lighting design for studios, contractors and developers worldwide — we work with your fixtures and your suppliers, fully vendor-neutral. You pay for our designers' time, not for hardware.
€25/haverage hourly rate (€20–30/h depending on project complexity) — or pick a fixed package:
STARTER — Single space
from €120
- One room or zone (office, shop, hall…)
- DIALux photometric calculation to EN 12464-1
- PDF report with layout and results
PROFESSIONAL — Full floor
from €450
- Complete floor or small building
- All room types, multiple working planes
- Emergency lighting check to EN 1838
- Luminaire specification for tendering
PREMIUM — Complete project
from €950
- Whole building or facade lighting
- Light scenes & photorealistic renders
- Emergency lighting design to EN 1838
- Revisions + support until commissioning
Final pricing depends on project size and documentation quality. Send us your drawings for a binding quotation within 48 hours.
See exactly what you get — download a sample report (PDF)FAQ
Everything you need to know before we start
Do you work with our own fixtures and suppliers?
Yes. For international projects we provide independent, vendor-neutral lighting design — we calculate with the luminaires you choose, from any manufacturer. You get an objective DIALux study, not a sales pitch.
How much does it cost?
Transparent pricing: roughly €20–30 per hour, or a fixed package — from €120 for a single space to €950+ for a complete project. Send us your drawings and you get a binding quotation within 48 hours.
What do I receive?
A DIALux photometric calculation to EN 12464-1 and a PDF report with layout and results. Larger packages add a luminaire specification for tendering, emergency lighting design to EN 1838, light scenes and photorealistic renders.
Which standards do you work to?
European norms — EN 12464-1 for indoor workplaces and EN 1838 for emergency and escape-route lighting. Deliverables are prepared so they pass tender review and approval.
How fast can you deliver?
A binding quotation within 48 hours of receiving your drawings; the delivery timeline is confirmed per project scope and complexity.
Which file formats do you deliver?
PDF reports, DWG with the luminaires placed in the drawing, and photometric files (LDT/IES) on request.
Contact
Let's talk about your project
Send us your drawings, CAD files or simply the room dimensions — we will come back with a proposal promptly.
- AddressDoo Fluoelektro
Dimitrija Tucovića 31
18000 Niš, Srbija - Phone+381 18 270 000
+381 18 270 001 - Emailprojekti@fluoelektro.com
- Webwww.fluoelektro.com